CVE-2026-40966

In Spring AI, an attacker can bypass conversation isolation and exfiltrate sensitive memory from other users’ chat histories, including secrets and credentials, by injecting filter logic through conversationId. Only applications that use VectorStoreChatMemoryAdvisor and pass user-supplied input as a conversationId are affected.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?version=3.1&vector=AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N	US Government Resource
https://spring.io/security/cve-2026-40966	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:vmware:spring_ai::::::::
	cpe:2.3:a:vmware:spring_ai::::::::

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) En Spring AI, un atacante puede eludir el aislamiento de conversaciones y exfiltrar memoria sensible de los historiales de chat de otros usuarios, incluyendo secretos y credenciales, inyectando lógica de filtro a través de conversationId. Solo las aplicaciones que utilizan VectorStoreChatMemoryAdvisor y pasan entrada proporcionada por el usuario como un conversationId se ven afectadas.

Information

Published : 2026-04-28 08:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-40966

Mitre link : CVE-2026-40966

CVE.ORG link : CVE-2026-40966

JSON object : View

Products Affected

vmware

spring_ai

CWE

CWE-284

Improper Access Control

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